Magath has emphasised the importance of home games as he hopes to overturn the one-point deficit to Cardiff to improve the rock-bottom Cottagers' predicament in the Barclays Premier League.
Magath refused to describe Saturday's match as a "must win", instead suggesting Cardiff have more to lose if the result does not go their way.
"Cardiff is in the worst situation, because Cardiff have a home game and they have to win," Magath said.
"They are one point better than us. It's not enough for them to avoid relegation.
"They have to win, so it's a good situation for us. I'm convinced that will give us a chance, with counter-attacks, to create chances and to score.
"In our situation you have to especially take care of the home games.
"You have to win the home games, with support from the fans. If you go away it is very difficult to say you must win."
Magath recognises the boost his side would take from winning at Cardiff.
"It's very important for us to have the first win," he said.
"Teams who have not won so much in the last games need confidence. The best confidence you can get is if you win.
"Now we are behind the other teams. That is more difficult than to be in 17th place or 18th or 19th place, when you left teams behind you.
"We have all the teams above us. We need to make the first step, to get one place higher and that will give us confidence."
Magath admitted following last week's loss to Chelsea that his side's defending must improve if Fulham are to avoid relegation.
He is certain they will and has confidence his team can their build on their first-half defensive display against Chelsea.
He added: "We stopped defending last week in the second half.
"What a team can do for 45 minutes a team is able to do for 90 minutes.
"We have to make it for 90 minutes, not only till half-time."
Striker Kostas Mitroglou could feature despite concerns over his hamstrings and match fitness.
Midfielder Scott Parker (knee) is out and winger Damien Duff (knee) has likely played his last game of the season, and possibly for the Cottagers as he is out of contract this summer.
Defender Fernando Amorebieta is still out, while William Kvist is likely to miss out with hamstring problems, despite playing 90 minutes for Denmark at Wembley on Wednesday night.